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Question

Find the cubic root of the following number by prime factorisation method:
13824

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Solution

On prime factorising, we get,

13824=2×2×2×2×2×2×2×2×2×3×3×3

=23×23×23×33.


Then, cube root of 13824 is:

313824=323×23×23×33=2×2×2×3=24.


Therefore, 24 is the required solution.


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